IPD incidence significantly declined by 60% over the study period.
A parallel decrease in the proportion of IPD isolates included in PCV7 and PCV13 vaccines was observed.
Global vaccine coverage was for PCV7 21.6% vs. 28.8% in general and in the ISP and for PCV13, 64.5% and 56.6%, respectively.
Penicillin resistance experienced a significant decline. No changes in mortality were detected.
Coverage of PCV13 vaccine might be suboptimal for immunosuppressed population in the coming years.